zoom-premium-stem-31-8-50-3
zoom-premium-stem-31-8-50-3, With the BW 31.8mm MTB Stem you can be confident you've got all the strength you need right where you need it. The aluminum construction, hardwearing anodized finish and solid 4-bolt 31.8mm clamp holds everything tight while you get loose. The 7Adeg rise provides optimum control and is available in 40, 50 and 60mm options. Compatible with 1 1/8" steerers we're so confident you'll love this stem we offer a 90-day money back guarantee.